AI Dr. J vs Ballet Protractor
Price, ratings, monetisation and update history for both apps, side by side โ with what reviewers say about each.
AI Dr. J
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AI Dr. J๋ AI ๊ธฐ๋ฐ ํผ๋ถ ๊ณ ๋ฏผ ์๋ด ๋ฐ ์คํจ์ผ์ด ์ ๋ณด ์๋น์ค์ ๋๋ค. ใ์ฃผ์ ๊ธฐ๋ฅใ โข AI ํผ๋ถ ๊ณ ๋ฏผ ์๋ด: ์ฌ์ฉ์๊ฐ ์ ๋ ฅํ ํผ๋ถ ์ํ/๊ณ ๋ฏผ์ ๋ฐํ์ผ๋ก ์ฐธ๊ณ ์ฉ ์ ๋ณด ์ ๊ณต โข ์คํจ์ผ์ด ๊ฐ์ด๋: ํผ๋ถ ํ์ ๊ณผ ์ํฉ์ ๋ง์ถ ๊ด๋ฆฌ ๋ฃจํด ์ ์ โข ์๋ด ์ด๋ ฅ ๊ด๋ฆฌ: ์ด์ ์ง๋ฌธ๊ณผ ๋ต๋ณ์ ํ์ธํ๋ฉฐ ๊ด๋ฆฌ ๊ฐ๋ฅ ใ์์ ์๋ดใ โข ๋ณธ ์ฑ์ ๋ต๋ณ์ ์ฐธ๊ณ ์ฉ์ด๋ฉฐ ์๋ฃ ์ง๋จ/์น๋ฃ๋ฅผ ๋์ฒดํ์ง ์์ต๋๋ค. โข ์ฌํ ์ฆ์, ์ ํ, ํต์ฆ/๋ฐ์ด/๊ฐ์ผ ์์ฌ, ์๊ธ ์ํฉ์ ์ฆ์ ์๋ฃ๊ธฐ๊ด์ ๋ฌธ์ํ์ธ์. ใ๊ฐ์ธ์ ๋ณด ์๋ดใ โข ์๋ด ๋ต๋ณ ์์ฑ์ ์ํด ์ฌ์ฉ์๊ฐ ์ ๋ ฅํ ๋ด์ฉ์ด ์ฒ๋ฆฌ๋ ์ ์์ต๋๋ค. โข ์์ธํ ๋ด์ฉ์ ๊ฐ์ธ์ ๋ณด์ฒ๋ฆฌ๋ฐฉ์นจ์ ํ์ธํ์ธ์. ๋ฌธ์: customercare@cura-pulse.com
Ballet Protractor
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Ballet Protractor is a ballet practice tool that measures your leg angles in real time with the camera. See exactly how many degrees your leg rises in a dรฉveloppรฉ or split, and keep a record to track your progress over time. It also includes a Manual Protractor that measures any angle right on a photo โ like your turnout. โ Measures the angle between your legs Recognizes side dรฉveloppรฉs as well as front and back extensions. โ Real-time measurement + skeleton overlay Pose recognition draws your leg lines and the angle on screen in real time. Just step in front of the camera. โ Record your practice on video Your best angle is shown live, and you can save the video to your gallery or share it. โ Measurement history and progress chart Every session's best angle is saved automatically, with a thumbnail of that moment. Watch your angles grow at a glance on the chart. โ Manual Protractor โ any angle, on a photo Take a photo or pick one from your gallery, drag the V-shaped protractor into place, and measure any angle from 0 to 360ยฐ. For angles on the floor โ like turnout โ turn on the top-down fix: even a tilted shot is automatically straightened to a true top-down view for an accurate reading. Save or share the photo with the angle on it. โ Offline ยท Privacy All measurement, video and photo processing, and record keeping happen only on your device. Recorded videos and photos leave the app only when you save or share them yourself. No sign-up required โ measuring and recording work without internet. โ Available in 5 languages Korean, English, Japanese, Russian, and French, shown automatically in your device language.
Screenshots
Verdict
The clearest difference is ads: AI Dr. J at none against Ballet Protractor's shown. Ballet Protractor's advantage is update cadence (daily vs monthly). On price, in-app purchases, device support and iOS requirement there is nothing between them.
Scored on Price ยท Rating ยท Positive reviews ยท Number of ratings ยท Update frequency ยท Ads ยท In-app purchases ยท Monetization ยท Best chart rank ยท Devices ยท Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
AI Dr. J ships an update monthly, Ballet Protractor daily. The most recent releases landed on October 30, 2026 and October 31, 2026 respectively.
| Parameter | AI Dr. J | Ballet Protractor |
|---|---|---|
| Price | Free | Free |
| Update frequency | Monthly | Daily โ better |
| Ads | No โ better | Yes |
| In-app purchases | No | No |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.1 โ better | 15.5 |
| Further details โ not scored | ||
| Size | 36 MB | 60 MB |
| Age rating | 12+ | 4+ |
| Developer | Cura-Pulse Co., Ltd | Jungmun Choi |
In-app purchases
AI Dr. J
No in-app purchases
Ballet Protractor
No in-app purchases
Questions
Is AI Dr. J free?
Is Ballet Protractor free?
Do AI Dr. J or Ballet Protractor have ads?
Which is updated more often, AI Dr. J or Ballet Protractor?
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